Home / 71,511.04-98,686.11-39,682.90

Finding the Fourth Proportional to 71,511.04, 98,686.11 and 39,682.90

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Solution

The fourth proportional to 71,511.04, 98,686.11 and 39,682.90 is: 54,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511.04 : 98,686.11 = 39,682.90 : x
  2. Step 2: Convert to fraction form
    71,511.04/98,686.11 = 39,682.90/x
  3. Step 3: Cross multiply
    71,511.04x = 98,686.11 × 39,682.90
  4. Step 4: Simplify right side
    71,511.04x = 3,916,151,034.52
  5. Step 5: Solve for x
    x = 3,916,151,034.52/71,511.04
  6. Step 6: Final answer
    x = 54,762.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.